Ergonomic writing instrument



FIG. 1 is a perspective view of a first embodiment of my invention;

FIG. 2 is another perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a front elevation view thereof;

FIG. 8 is a back elevation view thereof;

FIG. 9 is a perspective view of a second embodiment of my invention;

FIG. 10 is a another perspective view thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a right side elevation view thereof;

FIG. 14 is a left side elevation view thereof;

FIG. 15 is a front elevation view thereof; and,

FIG. 16 is a back elevation view thereof.

The broken line showings in FIGS. 1–7 and 9–15 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an ergonomic writing instrument, as shown and described. 